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BOSTON MARATHON 2025

Alan Huo

Bib: 5232•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
24:32
Rank: #15636
Start → 5K
24:32 | 7:54/mi
10K· 6.21 mi
49:48
Rank: #16629 (-993)
5K → 10K
25:16 | 8:08/mi
15K· 9.32 mi
1:15:05
Rank: #16743 (-114)
10K → 15K
25:17 | 8:08/mi
20K· 12.43 mi
1:40:06
Rank: #16337 (+406)
15K → 20K
25:01 | 8:03/mi
Half· 13.11 mi
1:45:29
Rank: #16268 (+69)
20K → Half
5:23 | 7:53/mi
25K· 15.53 mi
2:05:07
Rank: #15976 (+292)
Half → 25K
19:38 | 8:06/mi
30K· 18.64 mi
2:30:20
Rank: #15246 (+730)
25K → 30K
25:13 | 8:07/mi
20M
2:41:38
Rank: #14995 (+251)
30K → 20M
11:18 | 8:19/mi
21M
2:50:35
Rank: #14830 (+165)
20M → 21M
8:57 | 8:57/mi
35K· 21.75 mi
2:57:00
Rank: #14853 (-23)
21M → 35K
6:25 | 8:35/mi
23M
3:08:01
Rank: #14837 (+16)
35K → 23M
11:01 | 8:48/mi
24M
3:16:43
Rank: #14859 (-22)
23M → 24M
8:42 | 8:42/mi
40K· 24.85 mi
3:24:17
Rank: #14874 (-15)
24M → 40K
7:34 | 8:51/mi
25.2M
3:27:34
Rank: #14856 (+18)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
3:36:11
Rank: #14883 (-27)
25.2M → Finish
8:37 | 8:27/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:29
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:50:42
Pace8:27 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:31:5924:327:5424:32
7:54
-
10K
6.21 mi10:57:1549:488:0125:16
8:08
+0:14
15K
9.32 mi11:22:321:15:058:0325:17
8:08
0:00
20K
12.43 mi11:47:331:40:068:0325:01
8:03
-0:05
Half
13.11 mi11:52:561:45:298:035:23
7:53
-0:10
25K
15.53 mi12:12:342:05:078:0319:38
8:06
+0:13
30K
18.64 mi12:37:472:30:208:0425:13
8:07
+0:01
20M
20.00 mi12:49:052:41:388:0511:18
8:19
+0:12
21M
21.00 mi12:58:022:50:358:078:57
8:57
+0:38
35K
21.75 mi13:04:272:57:008:086:25
8:35
-0:22
23M
23.00 mi13:15:283:08:018:1011:01
8:48
+0:13
24M
24.00 mi13:24:103:16:438:128:42
8:42
-0:06
40K
24.85 mi13:31:443:24:178:137:34
8:51
+0:09
25.2M
25.20 mi13:35:013:27:348:143:17
9:31
+0:40
Finish
26.22 mi13:43:383:36:118:158:37
8:27
-1:04

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:53 /mi

Average Pace

8:15 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

54:56

25% of race

Time at Steady Pace

1:55:19

53% of race

Time at Slower Pace

45:56

21% of race

Average Pace: 8:15 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:31:5924:327:5424:32
7:54
#15636
10K
6.21 mi10:57:1549:488:0125:16
8:08
#16629
15K
9.32 mi11:22:321:15:058:0325:17
8:08
#16743
20K
12.43 mi11:47:331:40:068:0325:01
8:03
#16337
Half
13.11 mi11:52:561:45:298:035:23
7:53
#16268
25K
15.53 mi12:12:342:05:078:0319:38
8:06
#15976
30K
18.64 mi12:37:472:30:208:0425:13
8:07
#15246
20M
20.00 mi12:49:052:41:388:0511:18
8:19
#14995
21M
21.00 mi12:58:022:50:358:078:57
8:57
#14830
35K
21.75 mi13:04:272:57:008:086:25
8:35
#14853
23M
23.00 mi13:15:283:08:018:1011:01
8:48
#14837
24M
24.00 mi13:24:103:16:438:128:42
8:42
#14859
40K
24.85 mi13:31:443:24:178:137:34
8:51
#14874
25.2M
25.20 mi13:35:013:27:348:143:17
9:31
#14856
Finish
26.22 mi13:43:383:36:118:158:37
8:27
#14883
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi15636106731067316987(Top 60%)11208(Top 70%)11208(Top 199%)
10K6.21 mi3.10 mi16629-99311066-39311066-39317421(Top 61%)11418(Top 71%)11418(Top 202%)
15K9.32 mi3.11 mi16743-11411120-5411120-5416987(Top 60%)11208(Top 70%)11208(Top 199%)
20K12.43 mi3.11 mi16337+40610946+17410946+17415282(Top 54%)10446(Top 65%)10446(Top 185%)
Half13.11 mi0.68 mi16268+6910903+4310903+4314961(Top 53%)10323(Top 64%)10323(Top 183%)
25K15.53 mi2.42 mi15976+29210778+12510778+12514613(Top 51%)10028(Top 62%)10028(Top 178%)
30K18.64 mi3.11 mi15246+73010405+37310405+37312217(Top 43%)8792(Top 55%)8792(Top 156%)
20M20.00 mi1.36 mi14995+25110253+15210253+15212585(Top 44%)8817(Top 55%)8817(Top 156%)
21M21.00 mi1.00 mi14830+16510161+9210161+9213199(Top 46%)8955(Top 56%)8955(Top 159%)
35K21.75 mi0.75 mi14853-2310160+110160+115902(Top 56%)10129(Top 63%)10129(Top 180%)
23M23.00 mi1.25 mi14837+1610121+3910121+3915091(Top 53%)9666(Top 60%)9666(Top 171%)
24M24.00 mi1.00 mi14859-2210093+2810093+2815724(Top 55%)9920(Top 62%)9920(Top 176%)
40K24.85 mi0.85 mi14874-1510072+2110072+2115444(Top 54%)9631(Top 60%)9631(Top 171%)
25.2M25.20 mi0.35 mi14856+1810057+1510057+1514653(Top 52%)9246(Top 57%)9246(Top 164%)
Finish26.22 mi1.02 mi14883-2710032+2510032+2515917(Top 56%)9899(Top 61%)9899(Top 175%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21stories
+97ft-345ft

Overall

16987

Males

11208

M18-39

11208

5K→10K

3.1 - 6.2 mi

Top 61%
×5stories
+79ft-138ft

Overall

17421

Males

11418

M18-39

11418

10K→15K

6.2 - 9.3 mi

Top 60%
×3stories
+67ft-78ft

Overall

16987

Males

11208

M18-39

11208

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

15282

Males

10446

M18-39

10446

20K→Half

12.4 - 13.1 mi

Top 53%
×2stories
+19ft-37ft

Overall

14961

Males

10323

M18-39

10323

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

14613

Males

10028

M18-39

10028

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

12217

Males

8792

M18-39

8792

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

12585

Males

8817

M18-39

8817

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

13199

Males

8955

M18-39

8955

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

15902

Males

10129

M18-39

10129

35K→23M

21.8 - 23.0 mi

Top 53%
×5stories
+23ft-63ft

Overall

15091

Males

9666

M18-39

9666

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

15724

Males

9920

M18-39

9920

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15444

Males

9631

M18-39

9631

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

14653

Males

9246

M18-39

9246

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

15917

Males

9899

M18-39

9899

Passing Analysis

Category:
Athletes Passed
2737
Passed By
1984
Net Change
+753
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15636
5K → 10K721065-993#15636#16629
10K → 15K172286-114#16629#16743
15K → 20K45044+406#16743#16337
20K → Half767+69#16337#16268
Half → 25K33139+292#16268#15976
25K → 30K7399+730#15976#15246
30K → 20M26918+251#15246#14995
20M → 21M19833+165#14995#14830
21M → 35K5780-23#14830#14853
35K → 23M124108+16#14853#14837
23M → 24M6890-22#14837#14859
24M → 40K6984-15#14859#14874
40K → 25.2M4527+18#14874#14856
25.2M → Finish6794-27#14856#14883
TOTALS27371984+753
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing